In various low-voltage, power management application scenarios such as battery protection circuits, load switches, portable devices, and DC-DC converters, Texas Instruments' TPS1120DR, with its dual P-channel enhancement-mode MOSFET design, compact SOP8 package, and balanced performance, has long been a popular choice for engineers worldwide during design selection. However, against the backdrop of intensified global supply chain disruptions and frequent international trade frictions in the post-pandemic era, this imported component has gradually exposed numerous pain points: unpredictable lead times (often extending to 2-4 months), procurement costs vulnerable to exchange rate fluctuations, and delayed technical support responses. These issues severely constrain downstream companies' production schedules and cost control. Given this industry demand, domestic substitution has transitioned from an "option" to a "necessity," becoming a critical path for enterprises to ensure supply chain security, reduce costs, enhance efficiency, and improve core competitiveness.
VBsemi, with years of deep cultivation in the power semiconductor field, has launched the VBA4235 dual P-channel power MOSFET based on its independent R&D capabilities. This product precisely benchmarks the TPS1120DR, offering core advantages of parameter upgrades, technological parity, and full package compatibility. It can serve as a direct replacement without any modifications to the original circuit, providing a more stable, cost-effective, and locally attuned high-quality solution for various low-voltage electronic systems.
Comprehensive Parameter Surpassing, Ample Performance Redundancy, Adapting to More Demanding Conditions.
Tailored as a domestic alternative to the TPS1120DR, the VBA4235 achieves across-the-board, leapfrog improvements in key electrical parameters, offering more robust performance guarantees for low-voltage applications:
Firstly, the drain-source voltage is increased to -20V, 5V higher in absolute value than the original model's 15V—a 33% improvement. This upgrade provides a more sufficient safety margin in applications with voltage spikes or reverse voltage risks, effectively preventing system failures caused by device overvoltage breakdown.
Secondly, the continuous drain current is increased to -5.4A, significantly surpassing the original model's 1.17A—a over 360% enhancement in current-carrying capability. This enables effortless adaptation to higher current-level circuit designs, whether upgrading existing equipment to high-power versions or improving system operational stability at the same power level.
Thirdly, the on-state resistance is as low as 60mΩ (@2.5V or 4.5V gate drive), superior to the TPS1120DR's 180mΩ (@10V, 1.5A). This further reduces conduction losses, directly contributing to improved overall efficiency. Particularly in battery-powered applications, it can significantly extend battery life and reduce heat generation, lowering the design pressure of thermal management.
Additionally, the VBA4235 supports a ±12V gate-source voltage, offering stronger gate ESD and noise immunity, effectively preventing unintended turn-on in complex electromagnetic environments. The -0.6V gate threshold voltage design balances driving convenience and switching reliability, perfectly matching mainstream driver ICs on the market without requiring additional adjustments to the drive circuit, further lowering the barrier to substitution.
Enhanced with Advanced Trench Technology, Reliability and Stability Inherited and Upgraded.
The core advantage of the TPS1120DR lies in its dual P-channel integration and low power consumption. The VBA4235 employs the industry-leading Trench gate process, building upon the excellent switching characteristics of the original model while optimizing device reliability across multiple dimensions. The device undergoes 100% rigorous testing and screening before leaving the factory, exhibiting excellent thermal and electrical stability. It can easily handle current surges generated during fast switching, significantly reducing the risk of device damage due to overcurrent. Through optimized intrinsic capacitance structure design, it not only reduces charge/discharge losses during switching but also elevates dv/dt tolerance to a higher level, perfectly matching the application scenarios of the TPS1120DR. Even under harsh conditions like high-frequency operation and transient loads, it maintains stable operation and can be directly replaced without modifying the circuit topology. Furthermore, the VBA4235 features a wide operating temperature range, capable of adapting to various complex working conditions such as portable electronics and industrial environments. Having passed long-term reliability verification, its failure rate is far below the industry average, providing solid assurance for long-term, uninterrupted equipment operation—especially suitable for critical fields with reliability requirements like consumer electronics, automotive accessories, and power management systems.
Fully Compatible Package, Enabling "Virtually Cost-Free, Risk-Free, and Immediate" Replacement.
For downstream enterprises, a core concern regarding domestic substitution is the R&D investment and time costs involved in the replacement process. The VBA4235 fundamentally addresses this pain point through its package design. The device uses an SOP8 package, which is completely identical to the TPS1120DR's SOP8 package in terms of pinout, pin spacing, and package dimensions. Engineers need not make any modifications to the original PCB layout or adjust the thermal system design, achieving a "plug-and-play" convenient replacement. The advantages brought by this high degree of compatibility are evident: on one hand, it significantly reduces the time cost of substitution verification, eliminating the need for R&D teams to invest in circuit redesign, simulation, and testing—sample validation can typically be completed within 1-2 days. On the other hand, it avoids increased production costs from PCB revisions and mold adjustments while ensuring the original product's structural dimensions remain unchanged, eliminating the need for re-certification and外观 design. This effectively shortens the supply chain cycle, helping enterprises quickly achieve the substitution and upgrade of imported components and seize market opportunities.
Local Strength Assurance, Dual Peace of Mind for Supply Chain Security and Technical Support.
Compared to the unstable supply chain of imported components affected by multiple factors like international logistics, trade policies, and exchange rate fluctuations, VBsemi leverages China's well-established semiconductor industry chain layout, with modern production bases and R&D centers in Jiangsu, Guangdong, and other locations. This enables full-process independent R&D and stable mass production of the VBA4235. Currently, the standard lead time for this model is compressed to within 2 weeks, with emergency orders enabling 72-hour rapid delivery. This effectively mitigates various risks such as international supply chain volatility, tariff barriers, and geopolitics, providing solid assurance for the smooth progress of enterprise production plans. Simultaneously, as a local brand, VBsemi boasts a professional technical support team offering "one-on-one" customized services: not only providing comprehensive technical documentation, including detailed substitution verification reports, device datasheets, thermal design guides, and application circuit references, but also offering targeted selection advice and circuit optimization solutions based on specific customer application scenarios. For any technical issues arising during the substitution process, the technical team can provide rapid response within 24 hours, assisting with on-site or remote resolution. This thoroughly addresses the pain points of slow technical support response and high communication costs associated with imported components, making the substitution process smoother and more worry-free.
From battery protection modules and load switch circuits to portable device power management and DC-DC converters; from automotive electronics and consumer gadgets to industrial control systems and IoT devices, the VBA4235, with its core advantages of "superior parameters, more stable performance, package compatibility, controllable supply, and attentive service," has become the preferred solution for domestic substitution of the TPS1120DR. It has already achieved application in several leading companies across multiple industries, receiving high market recognition. Choosing the VBA4235 is not merely a simple component replacement; it is a crucial step for enterprises in upgrading supply chain security, optimizing production costs, and enhancing product competitiveness—requiring no assumption of R&D modification risks while enjoying superior performance, more stable supply, and more convenient technical support.